////////////////////////////////////////////////////////////////////////////////
/// 74HC595.h
///
/// Header file for interfacing with a 74HC595 shift register attached to PORTB
/// Requirements:
/// * Define: LATCH_PIN_PORTB, DATA_PIN_PORTB, CLOCK_PIN_PORTB as the PORTB pin
///           numbers associated with the shift register
////////////////////////////////////////////////////////////////////////////////
/// softwareShiftOut
/// takes latch low, shifts one byte then brings latch high
////////////////////////////////////////////////////////////////////////////////
void softwareShiftOut(uint8_t output);
